281257730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:843

約数の個数: 64

約数和(自身を含む): 569189376

約数和(自身を除く): 287931646

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 101, 130, 155, 202, 310, 403, 505, 691, 806, 1010, 1313, 1382, 2015, 2626, 3131, 3455, 4030, 6262, 6565, 6910, 8983, 13130, 15655, 17966, 21421, 31310, 40703, 42842, 44915, 69791, 81406, 89830, 107105, 139582, 203515, 214210, 278473, 348955, 407030, 556946, 697910, 907283, 1392365, 1814566, 2163521, 2784730, 4327042, 4536415, 9072830, 10817605, 21635210, 28125773, 56251546, 140628865, 281257730]

約数ペア:

[(1, 281257730), (2, 140628865), (5, 56251546), (10, 28125773), (13, 21635210), (26, 10817605), (31, 9072830), (62, 4536415), (65, 4327042), (101, 2784730), (130, 2163521), (155, 1814566), (202, 1392365), (310, 907283), (403, 697910), (505, 556946), (691, 407030), (806, 348955), (1010, 278473), (1313, 214210), (1382, 203515), (2015, 139582), (2626, 107105), (3131, 89830), (3455, 81406), (4030, 69791), (6262, 44915), (6565, 42842), (6910, 40703), (8983, 31310), (13130, 21421), (15655, 17966)]